PVT1, PVT2, PFC, SP/4 (CPL), SGT, SSG, SFC, MSG, CSM 2LT, 1LT, CPT, MAJ, LTC, COL, GEN, MGN, LTG, GEN Today's Army has replaced the old SP/4 with plain SP (Specialist).
Ranks were the same as today. No changes.
West Point and direct appointments.
dark green
For the US Army, during the Vietnam War, a battalion was about 600 men. The US Marine Corps will be similar in organization (during the Vietnam era).
During the Vietnam War, in the US military, women were part of the WAC's (Women's Army Corps) in the US Army. The US Navy had the WAVE's.
Grant commanded the Northern army during the US Civil War. Giap commanded the Northern army during the Vietnam War.
For North Vietnam or South Vietnam? The North Vietnamese were known simply as the 'North Vietnamese Army' (NVA) to US forces, but their actual title was Vietnam Peoples' Army, as it common practice in Communist states. The South Vietnamese Army was referred to as the Army of the Republic of Vietnam (ARVN).
For the "most" part, the US Army had men from most, if not all walks of life in America. Men such as Elvis Presley, to sons of Generals were known to be within the enlisted ranks.
US Military newspaper: Stars & Stripes
The officer ranks are both the same. However the enlisted ranks are different. The Army also has Warrant Officers where as the Air Force does not.
During the Vietnam era, the official US Army designation for a tanker was, "Armor Crewman."
US Army GEN Westermoreland; a WWII veteran.
You are a Vietnam Era Veteran but not a Vietnam War Veteran